1516641389 has 8 divisors (see below), whose sum is σ = 1597659840. Its totient is φ = 1435742496.

The previous prime is 1516641337. The next prime is 1516641409. The reversal of 1516641389 is 9831466151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1516641389 is a prime.

It is a super-2 number, since 2×1516641389² = 4600402205655698642, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516641589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3224 + ... + 55169.

It is an arithmetic number, because the mean of its divisors is an integer number (199707480).

Almost surely, 2^1516641389 is an apocalyptic number.

1516641389 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1516641389 is a deficient number, since it is larger than the sum of its proper divisors (81018451).

1516641389 is a wasteful number, since it uses less digits than its factorization.

1516641389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59779.

The product of its digits is 155520, while the sum is 44.

The square root of 1516641389 is about 38944.0802818606. The cubic root of 1516641389 is about 1148.9319356248.

The spelling of 1516641389 in words is "one billion, five hundred sixteen million, six hundred forty-one thousand, three hundred eighty-nine".